如何解析pcap文件并从pcap文件中的字节信息中只读取python中的一些特定位？

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+---------+---------------+----------+
09:28:21,957,743   ETHER
|0   |e8|b1|fc|14|91|73|58|ac|78|e3|a7|7f|08|00|45|48|00|54|50|81|00|00|79|11|04|9b|0a|04|17|aa|0a|42|c0|45|00|89|00|89|00|40|36|f9|d8|50|85|83|00|00|00|00|00|00|00|00|20|46|44|46|4a|46|44|46|45|45|46|45|4e|46|43|45|50|45|50|46|45|43|41|43|41|43|41|43|41|43|41|43|41|00|00|0a|00|01|00|00|00|00|00|00|

+---------+---------------+----------+
09:28:21,968,617   ETHER
|0   |ff|ff|ff|ff|ff|ff|e8|b1|fc|14|91|73|08|00|45|00|00|4e|00|0c|00|00|80|11|95|ca|0a|42|c0|45|0a|42|cf|ff|00|89|00|89|00|3a|02|ce|d8|50|01|10|00|01|00|00|00|00|00|00|20|46|44|46|4a|46|44|46|45|45|46|45|4e|46|43|45|50|45|50|46|45|43|41|43|41|43|41|43|41|43|41|43|41|00|00|20|00|01|

+---------+---------------+----------+
09:28:21,987,353   ETHER
|0   |01|00|5e|00|00|fc|e8|b1|fc|14|91|73|08|00|45|00|00|38|5a|68|00|00|01|11|b3|c9|0a|42|c0|45|e0|00|00|fc|d7|fa|14|eb|00|24|98|2b|85|df|00|00|00|01|00|00|00|00|00|00|0a|73|79|73|74|65|6d|72|6f|6f|74|00|00|01|00|01|